This bucket feeder design was motivated by the fact that my wife and I live in different cities and have a cat that hates to ride in the car. The automated feeder makes it possible to be able to leave our cat at one apartment for a weekend without worrying about if she is getting […]
Automated 5 Gallon Bucket Feeder Continue Reading
What are we messing with? IoT (Internet of things) set-up to operate/control 220-240 Volt AC Bulb/Device NodeMCU Amica + 5V Relay + MQTT + Arduino IDE + Web Browser (HTML + JavaScript/jQuery) WARNING!! – THIS PROJECT INVOLVES WORKING WITH HIGH VOLTAGES THAT CAN CAUSE SERIOUS INJURY, DEATH, AND/OR SET YOUR HOUSE ON FIRE. PLEASE PROCEED
In this week’s arduino tutorial, we take a bit of a detour and focus on some key elements of electrical engineering design that we’ll be using in future episodes. [box type=”note” color=” #202020 ” bg=”#ffbb00 ” font=”verdana” fontsize=”14″ radius=”20 ” border=”#000″ float=”right” head=”Attributes”]Thanks to Jeremy , for this articles[/box] Included amongst these topics is Ohm’s
Arduino: Electrical Engineering Basics Continue Reading
I know the Z-Wave or Netatmo system for IoT, domotic system and automation of house. But now you can make a simple system that uses a Node MCU board and Cayenne platform for control five 110/220 V sockets. You can download the Cayenne app on your phone or visit the Dashboard on the web by your computer, and switch ON/OFF your
Cayenne and SparkFun IoT 433 Mhz Sockets Continue Reading
Interrupts are an extremely useful, yet often feared element of microprocessors. Interrupts allow you to run a program, while still being able to react to asynchronous input from the outside world. [box type=”note” color=” #202020 ” bg=”#ffbb00 ” font=”verdana” fontsize=”14″ radius=”20 ” border=”#000″ float=”right” head=”Attributes”]Thanks to Jeremy , for this articles[/box] On many platforms they can
Arduino Interrupts and Debouncing Continue Reading
Why another spot welder project? Building a spot welder is one of the (arguably few) cases in which you can build something for a fraction of the price of the commercial version with comparable quality. And even if build-before-buy were not a winning strategy, it is a lot of fun! So I decided to embark
Spot Welder 1-2-3 Arduino Firmware Continue Reading
The big problem using the ESPs is the power consumption when Wifi “goes up”, about 100-200mA, peak up to 300mA. Normal coincells deliver a few mA, peak up to 20-40mA. But for the ESPs the voltage will collapse. We need “a little help of my friend”: the supercap. These capacitors deliver enough current for power
Remote Control: ESP8266 With Coin Cell Continue Reading
Introduction I have a laptop on a shelf in my office that monitors several cameras that are around the outside of my house. They alert me to deliveries and visitors. While I can use a web browser to see their images it is easier to just glance at the screen on the laptop from time-to-time to
Alexa Controlled Servo Continue Reading
There is always a need for automating a process,be it a simple/monstrous one.I got the idea to do this project from a simple challenge that i faced while finding methods to water/irrigate our small piece of land.The problem of no current supply lines and costly generators (to operate our pump) added to the difficulty. So
Ready-made SD card logging shields for the Arduino typically cost in the range of $15 – $25. This is quite reasonable, but we might save a couple of bucks if we make our own. Not to mention all the fun in building it. Forget about soldering wires to a bare SD card socket. It’s just
Arduino DIY SD Card Logging Shield Continue Reading
